Special Section on Metamaterials: Fundamentals and Applications

Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications

[+] Author Affiliations
Georges Nehmetallah

University of Dayton, Department of Electrical and Computer Engineering and Electro-Optics Program, 300 College Park, Dayton, Ohio 45469

Rola Aylo

University of Dayton, Department of Electrical and Computer Engineering and Electro-Optics Program, 300 College Park, Dayton, Ohio 45469

Partha P. Banerjee

University of Dayton, Department of Electrical and Computer Engineering and Electro-Optics Program, 300 College Park, Dayton, Ohio 45469

J. Nanophoton. 5(1), 051603 (April 26, 2011). doi:10.1117/1.3576117
History: Received December 09, 2010; Revised February 08, 2011; Accepted March 17, 2011; Published April 26, 2011; Online April 26, 2011
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We theoretically explored the feasibility of a tunable metamaterial using binary as well as core-shell nanoparticle dispersed liquid crystal cells in the infrared and optical regimes. Owing to the spatial variation of the permittivity of the liquid crystal host upon the application of a bias voltage, the host was decomposed into a layered medium and the effective refractive index recalculated for each layer due to the distribution of polaritonic and plasmonic nanoparticles. The scattering, extinction, and absorption of such a nanoparticle dispersed liquid crystal cell were also found. Depending on the applied voltage bias across the liquid crystal host, the types of nanoparticles used, and their radii and volume-filling fractions in the liquid crystal host, near-zero as well as negative index of refraction can be obtained over a range of frequencies, according to the effective medium theory.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Georges Nehmetallah ; Rola Aylo and Partha P. Banerjee
"Binary and core-shell nanoparticle dispersed liquid crystal cells for metamaterial applications", J. Nanophoton. 5(1), 051603 (April 26, 2011). ; http://dx.doi.org/10.1117/1.3576117


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